CN111336329A - High-temperature-resistant heat-insulating fireproof sleeve and preparation method thereof - Google Patents
High-temperature-resistant heat-insulating fireproof sleeve and preparation method thereof Download PDFInfo
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- CN111336329A CN111336329A CN202010262666.XA CN202010262666A CN111336329A CN 111336329 A CN111336329 A CN 111336329A CN 202010262666 A CN202010262666 A CN 202010262666A CN 111336329 A CN111336329 A CN 111336329A
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- insulating
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/02—Hoses, i.e. flexible pipes made of fibres or threads, e.g. of textile which may or may not be impregnated, or provided with an impermeable layer, e.g. fire-hoses
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D23/00—Producing tubular articles
- B29D23/001—Pipes; Pipe joints
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
- F16L57/04—Protection of pipes or objects of similar shape against external or internal damage or wear against fire or other external sources of extreme heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
- F16L59/029—Shape or form of insulating materials, with or without coverings integral with the insulating materials layered
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Thermal Insulation (AREA)
Abstract
The invention relates to a high-temperature-resistant heat-insulating fireproof sleeve and a preparation method thereof, wherein the high-temperature-resistant heat-insulating fireproof sleeve comprises a framework layer, a heat-insulating layer is wrapped on the outer surface of the framework layer, a woven layer is arranged on the outer surface of the heat-insulating layer, and a coating layer is arranged on the outer surface of the woven layer; the preparation method of the high-temperature-resistant heat-insulating fireproof sleeve comprises the following steps: (1) preparing a flexible hose as a framework layer from a heat-resistant material by a pipe extruder; (2) the outer surface of the framework layer is wrapped with aerogel to serve as a heat insulation layer; (3) weaving heat-resistant fibers on the outer layer of the heat-insulating layer by using a three-dimensional weaving process to form a weaving layer 3; (4) coating a plastic flame-retardant thermoplastic resin on the outer layer of the woven layer to form a coating layer 4; the high-temperature-resistant fireproof sleeve prepared by the invention has the advantages of high temperature resistance, good heat insulation, good flexibility, non-flammability, aging resistance, electric insulation, water resistance, oil resistance and the like, can be exposed in an environment of-50-260 ℃ for a long time, can be continuously used for 15-20 min in an environment of 1030 ℃ and can be used for 15-30S at a high temperature of 1600 ℃, is used for conveying flammable fluid hazardous chemicals such as an oil pipeline and a chemical conveying pipeline and the like, can greatly reduce potential safety hazards, and can minimize accident loss.
Description
Technical Field
The invention belongs to the technical field of processing and preparation of high polymer materials, and particularly relates to a high-temperature-resistant heat-insulating fireproof sleeve and a preparation method thereof.
Background
The development of domestic plastic pipes has been more than forty years old, and the plastic pipes have a great significance in the fields of buildings, municipal administration, chemical industry, automobiles, medicines, weapons, military industry, aerospace and the like due to the advantages of corrosion resistance, ageing resistance, low density, low fluid resistance, convenient construction, low manufacturing cost and the like; however, most of plastic pipes are flammable, so that in the practical application process, high fire hazard exists, which not only causes great economic loss, but also even causes the harm to the life health of people.
The fluid transmission pipeline in traditional chemical medicine industry is used for carrying organic matters such as chemical raw materials, chemical intermediates usually, and the organic matter is mainly by elements such as C, H, O constitution, has inflammability and insulating nature, and in long-time transportation, the tubular product inner wall can produce the static charge, accumulates day by day, and the static charge amount accumulates to a certain extent, can produce the high pressure, leads to the organic matter burning, can cause serious loss.
In the smelting industry, because the medium temperature in the electric heating furnace is extremely high, high-temperature splashing is easily formed, slag is formed on the cable after cooling and solidification, so that the rubber on the outer layer of the pipeline or the cable is aged and finally is catalytically cracked, unprotected equipment and the cable are further damaged, and safety accidents are even caused seriously.
In the automobile industry, the engine can continuously generate heat in the running process of the automobile, the temperature is higher, the connection wire harness in the engine compartment can accelerate the aging of a plastic coating layer and a plastic part on the surface of the wire harness in the environment for a long time, the fault is easy to generate, and the accident can be seriously caused.
In the fields of weapons, military industry and aerospace, high temperature is easily generated in the using process of equipment, and directly harms a fuel oil power system, so that the fuel oil power system fails, even explodes and causes huge loss.
High temperature can generate serious potential safety hazard to fuel oil systems of aerospace, weapons, war industry, automobile fuel oil systems, circuit systems and chemical engineering and medical pipeline systems, and once an accident occurs, serious economic loss and even casualties can be caused, so that the fluid transmission pipeline has very important significance for high temperature protection in the using process.
The fire-proof sleeve, also known as high-temperature sleeve and heat-resistant sleeve, is generally made by weaving high-purity alkali-free glass fiber into a tube, then coating liquid flame-retardant silicon rubber on the outer wall of the tube, and carrying out vulcanization and other processes. The special high-temperature resistant material determines that the high-temperature sleeve has the characteristic that a plurality of other similar materials are difficult to replace: high temperature resistance, heat preservation and insulation performance, flame retardant performance, electrical insulation performance, chemical stability performance, weather aging resistance, low temperature resistance, corrosion resistance, ozone resistance, electric arc resistance and the like, and is safe and environment-friendly.
The invention patent CN 209800884N discloses a high-temperature-resistant fireproof sleeve, which structurally comprises a pipe body, a damping protective sleeve and a fireproof layer, and aims to solve the problem that a built-in pipeline is damaged by pressure due to the fact that good damping cannot be carried out on the pipeline, the damping protective sleeve is arranged on the outer diameter of the pipe body, part of pressure is absorbed by air bubbles arranged on the outer surface of an air bubble film, then reverse elasticity generated by compression of a spring is counteracted with the pressure, meanwhile, reverse elasticity generated by deformation of a damping pad assists in counteracting the pressure, the effect of protecting the pipeline is achieved, and in order to solve the problem that the pipeline cannot be well protected, the wear resistance is poor, and the pipeline is damaged due to the fact that the fireproof fiber cloth cannot be well burnt due to the fact that the temperature is too high, the fireproof layer is arranged on the outer diameter of an outer shell, a fire source is isolated by fireproof fiber cloth, the pipeline, and the iron oxide red silica gel belt enhances the heat resistance and prevents the pipeline from being burnt, thereby achieving the effects of protecting the pipeline and improving the heat resistance and the flame retardance.
The invention patent CN 207398757U discloses a cable heat insulation fireproof sleeve, which comprises a sleeve made of organic refractory material, wherein an opening is axially arranged on the wall of the sleeve; a lower lap joint tongue is arranged along the edge of the pipe wall at one side of the opening, and an upper lap joint tongue is arranged along the edge of the pipe wall at the other side of the opening; the upper lapping tongue and the lower lapping tongue are connected through a connecting piece arranged along the axial direction after being lapped; a plurality of heat insulation through holes are arranged in the pipe wall of the sleeve along the axial direction, and are evenly distributed along the circumferential direction of the section of the sleeve. The invention has the advantages that the plurality of heat insulation through holes are arranged in the pipe wall of the sleeve along the axial direction, and the heat conductivity of the air is less than that of the pipe wall of the organic refractory material, so that the heat insulation performance of the pipe wall of the sleeve is improved, the preparation cost of the sleeve is greatly reduced, and the consumption of raw materials is saved. The sleeve is arranged to be of an axial opening structure, so that the installation operation of cables arranged at the inlet wires of the tunnel, the cable well and the transformer and distribution station is greatly facilitated.
The fireproof sleeve disclosed in the current patent can be used for only 30s at 1200 ℃, and the effect of using 15-30 s at 1600 ℃ still needs to be improved.
Disclosure of Invention
The invention relates to a preparation method of a high-temperature-resistant fireproof sleeve, mainly solves the problem of low temperature-resistant effect of the conventional fireproof sleeve, and provides a fireproof sleeve with good flame retardance and good temperature-resistant effect and a preparation method thereof.
The high-temperature-resistant heat-insulating fireproof sleeve comprises a framework layer, wherein a heat-insulating layer is wrapped on the outer surface of the framework layer, a braided layer is arranged on the outer surface of the heat-insulating layer, and a wrapping layer is arranged on the outer surface of the braided layer.
The inner diameter of the framework layer is 8 mm-35 mm.
The thickness of the framework layer is 0.5 mm-3 mm.
A preparation method of a high-temperature-resistant heat-insulating fireproof sleeve comprises the following steps:
(1) preparing a flexible hose as a framework layer from a heat-resistant material by a pipe extruder;
(2) the outer surface of the framework layer is wrapped with aerogel to serve as a heat insulation layer;
(3) weaving heat-resistant fibers on the outer layer of the heat-insulating layer by using a three-dimensional weaving process to form a woven layer;
(4) and (3) coating a plastic flame-retardant thermoplastic resin on the outer layer of the woven layer to form a coating layer.
The heat-resistant material in the step (1) is one or more of FEP resin, PFA resin, PTFE resin and ETFE resin.
The aerogel in the step (2) is one or more of silicon dioxide (SiO 2) aerogel, aluminum oxide (Al 2O 3) aerogel and zirconium dioxide (ZrO 2) aerogel.
The heat-resistant fiber in the step (3) is one or more of continuous carbon fiber, continuous glass fiber, para-aramid fiber and meta-aramid fiber.
The monofilament diameter range of the heat-resistant fiber in the step (3) is between 2 and 30 micrometers.
The flame-retardant thermoplastic resin in the step (4) is a high-temperature-resistant flame-retardant material and comprises one or more of flame-retardant thermoplastic polyurethane, flame-retardant thermoplastic polyester elastomer, flame-retardant thermoplastic nylon elastomer, flame-retardant fluororubber and flame-retardant silicone rubber.
The invention has the beneficial effects that: according to the invention, the heat-resistant material is prepared into the flexible hose through the pipe extruder to be used as the framework layer, so that the heat-resistant hose has a good heat insulation effect; the outer layer of the woven layer is coated with the flame-retardant thermoplastic resin, so that the woven layer has good flame-retardant and heat-insulating effects and plays a primary protection role; the high-temperature-resistant fireproof sleeve prepared by the invention has the advantages of high temperature resistance, good heat insulation, good flexibility, non-flammability, aging resistance, electric insulation, water resistance, oil resistance and the like, can be exposed in an environment of-50-260 ℃ for a long time, can be continuously used for 15-20 min in an environment of 1030 ℃ and can be used for 15-30S at a high temperature of 1600 ℃, is used for conveying flammable fluid hazardous chemicals such as an oil pipeline and a chemical conveying pipeline and the like, can greatly reduce potential safety hazards, and can minimize accident loss.
Drawings
Fig. 1 is a schematic front view of a high-temperature-resistant, heat-insulating, fire-proof sleeve according to the present invention.
In the figure: 1. framework layer 2, insulating layer 3, weaving layer 4, cladding.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The examples further illustrate the invention. The present embodiments are to be considered as illustrative and not restrictive, the scope of the invention being indicated by the claims, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
The high-temperature-resistant heat-insulating fireproof sleeve comprises a framework layer, wherein a heat-insulating layer is wrapped on the outer surface of the framework layer, a braided layer is arranged on the outer surface of the heat-insulating layer, and a wrapping layer is arranged on the outer surface of the braided layer.
A preparation method of a high-temperature-resistant heat-insulating fireproof sleeve comprises the following steps:
the method comprises the following steps: preparing a heat-resistant resin hose as a framework layer 1 by using a continuous molding process;
step two: coating aerogel on the outer layer of the framework layer to serve as a heat insulation layer 2;
step three: weaving heat-resistant fibers on the outer layer of the heat-insulating layer 2 by using three-dimensional weaving equipment to form a weaving layer 3;
step four: the outer layer of the weaving layer 3 is coated with a high-temperature resistant flame retardant material to be used as a coating layer 4; if the covering layer 4 is rubber, further vulcanization is required.
Example 1
The heat-resistant material used by the framework layer of the fireproof sleeve is PTFE resin, the aerogel used by the heat-insulating layer is silicon dioxide aerogel, the heat-resistant fiber used by the woven layer is continuous glass fiber, the monofilament diameter of the woven layer is 13 mu m, and the material used by the coating layer is flame-retardant silicon rubber.
Example 2
The heat-resistant material used by the framework layer of the fireproof casing is PFA resin, the aerogel used by the heat-insulating layer is alumina aerogel, the continuous fiber used by the woven layer is continuous carbon fiber, the monofilament diameter of the continuous carbon fiber is 7 mu m, and the material used by the coating layer is flame-retardant fluororubber.
Example 3
The heat-resistant material used by the framework layer of the fireproof sleeve is FEP resin, the aerogel used by the heat-insulating layer is alumina aerogel, the continuous fiber used by the woven layer is continuous glass fiber, the monofilament diameter of the continuous glass fiber is 13 mu m, and the material used by the coating layer is flame-retardant thermoplastic polyurethane.
While there have been shown and described what are at present considered to be the fundamental principles of the invention and its essential features and advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, which are presented for purposes of illustration only, but are intended to be covered by the following claims without departing from the spirit and scope of the invention in which various changes and modifications are possible. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. The utility model provides a high temperature resistant fire prevention sleeve pipe that insulates against heat, it includes the casing ply, its characterized in that: the outer surface of the framework layer is coated with a heat insulation layer, the outer surface of the heat insulation layer is provided with a braided layer, and the outer surface of the braided layer is provided with a coating layer.
2. The high temperature resistant, insulating, and fire resistant sleeve of claim 1, wherein: the inner diameter of the framework layer is 8 mm-35 mm.
3. The high temperature resistant insulating fire sleeve of claim 1, wherein: the thickness of the framework layer is 0.5 mm-3 mm.
4. The preparation method of the high-temperature-resistant heat-insulating fireproof sleeve is characterized by comprising the following steps of:
(1) preparing a flexible hose as a framework layer from a heat-resistant material by a pipe extruder;
(2) the outer surface of the framework layer is wrapped with aerogel to serve as a heat insulation layer;
(3) weaving heat-resistant fibers on the outer layer of the heat-insulating layer by using a three-dimensional weaving process to form a woven layer;
(4) and (3) coating a plastic flame-retardant thermoplastic resin on the outer layer of the woven layer to form a coating layer.
5. The method for preparing the high-temperature-resistant, heat-insulating and fire-proof sleeve according to claim 4, wherein the method comprises the following steps: the heat-resistant material in the step (1) is one or more of FEP resin, PFA resin, PTFE resin and ETFE resin.
6. The method for preparing the high-temperature-resistant, heat-insulating and fire-proof sleeve according to claim 4, wherein the method comprises the following steps: the aerogel in the step (2) is one or more of silicon dioxide aerogel, aluminum oxide aerogel and zirconium dioxide aerogel.
7. The method for preparing the high-temperature-resistant, heat-insulating and fire-proof sleeve according to claim 4, wherein the method comprises the following steps: the heat-resistant fiber in the step (3) is one or more of continuous carbon fiber, continuous glass fiber, para-aramid fiber and meta-aramid fiber.
8. The method for preparing the high-temperature-resistant, heat-insulating and fire-proof sleeve according to claim 4, wherein the method comprises the following steps: the monofilament diameter range of the heat-resistant fiber in the step (3) is between 2 and 30 micrometers.
9. The method for preparing the high-temperature-resistant, heat-insulating and fire-proof sleeve according to claim 4, wherein the method comprises the following steps: the flame-retardant thermoplastic resin in the step (4) is a high-temperature-resistant flame-retardant material and comprises one or more of flame-retardant thermoplastic polyurethane, flame-retardant thermoplastic polyester elastomer, flame-retardant thermoplastic nylon elastomer, flame-retardant fluororubber and flame-retardant silicone rubber.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010262666.XA CN111336329A (en) | 2020-04-07 | 2020-04-07 | High-temperature-resistant heat-insulating fireproof sleeve and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010262666.XA CN111336329A (en) | 2020-04-07 | 2020-04-07 | High-temperature-resistant heat-insulating fireproof sleeve and preparation method thereof |
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| CN111336329A true CN111336329A (en) | 2020-06-26 |
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| CN202010262666.XA Pending CN111336329A (en) | 2020-04-07 | 2020-04-07 | High-temperature-resistant heat-insulating fireproof sleeve and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113085318A (en) * | 2021-05-13 | 2021-07-09 | 河南理工大学 | Physical improvement method for thermal stability of high-temperature-resistant enhanced rubber component |
| CN113211665A (en) * | 2021-05-19 | 2021-08-06 | 山东宝泰隔热材料有限公司 | Fireproof heat-insulating section bar and production process thereof |
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| CN201265715Y (en) * | 2008-07-29 | 2009-07-01 | 王建国 | Composite heat conduction hose |
| CN102410411A (en) * | 2011-08-25 | 2012-04-11 | 张家港联冠新材料有限公司 | Reinforced composite heat-preserving and heat-insulating ultrahigh molecular weight polyethylene pipe |
| CN203614940U (en) * | 2013-10-08 | 2014-05-28 | 杨帆 | Mining steel wire reinforced thermoplastic polyurethane elastomer hose |
| CN105221859A (en) * | 2015-10-22 | 2016-01-06 | 盘锦建硕管业有限公司 | A kind of fiber reinforcement type insulation thermoplastic composite pipe and preparation method thereof |
| CN110043665A (en) * | 2019-04-30 | 2019-07-23 | 哈尔滨工业大学 | A kind of heat seal structure and its assemble method suitable for hot environment |
| CN209725500U (en) * | 2019-04-23 | 2019-12-03 | 河北鑫瑞得管道设备有限公司 | City heat supply engineering multiple tube |
-
2020
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201265715Y (en) * | 2008-07-29 | 2009-07-01 | 王建国 | Composite heat conduction hose |
| CN102410411A (en) * | 2011-08-25 | 2012-04-11 | 张家港联冠新材料有限公司 | Reinforced composite heat-preserving and heat-insulating ultrahigh molecular weight polyethylene pipe |
| CN203614940U (en) * | 2013-10-08 | 2014-05-28 | 杨帆 | Mining steel wire reinforced thermoplastic polyurethane elastomer hose |
| CN105221859A (en) * | 2015-10-22 | 2016-01-06 | 盘锦建硕管业有限公司 | A kind of fiber reinforcement type insulation thermoplastic composite pipe and preparation method thereof |
| CN209725500U (en) * | 2019-04-23 | 2019-12-03 | 河北鑫瑞得管道设备有限公司 | City heat supply engineering multiple tube |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113085318A (en) * | 2021-05-13 | 2021-07-09 | 河南理工大学 | Physical improvement method for thermal stability of high-temperature-resistant enhanced rubber component |
| CN113211665A (en) * | 2021-05-19 | 2021-08-06 | 山东宝泰隔热材料有限公司 | Fireproof heat-insulating section bar and production process thereof |
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Application publication date: 20200626 |